If Teresa’s Daughter is My Daughter’s Mother, What Am I to Teresa?

If Teresa’s daughter is your daughter’s mother, then you are Teresa’s son-in-law. Here’s the explanation:

1. Teresa’s daughter is your daughter’s mother. This means that Teresa’s daughter is your wife or partner.

2. Since Teresa’s daughter is your wife or partner, Teresa is your mother-in-law.

3. Therefore, you are Teresa’s son-in-law.